Abstract Green infrastructure (GI) effectively mitigates health effects associated with PM 2.5 and urban heat. However, the impact of GI's morphological characteristics on compound exposure remains unclear. With a large urban population, Chinese cities face significant compound exposure risks, yet national‐scale GI planning strategies addressing this issue are lacking. This study incorporates 374 Chinese cities, quantifying and mapping the spatial distribution and changes of four spatial morphological structures of GI, seasonal PM 2.5 pollution, and summer daytime and nighttime land surface temperature over the past 20 years. Results indicate that core areas are larger and have expanded significantly, failing to effectively mitigate compound exposure risks. Although connectors represent a smaller scale of GI, they play a significant and positive role in mitigating compound exposure risk, especially when their proportion exceeds 2% of urban space. We suggest that urban planners prioritize connectivity‐oriented GI strategies to effectively mitigate compound exposure risks.
Gong et al. (Sun,) studied this question.